package com.gfdd.tea.config;


import com.gfdd.tea.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;


import java.util.List;

@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
    /**
     * 设置静态资源
     * @param registry
     */
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("静态资源启动成功");

    }

    /**
     * 扩展mvc框架的消息转化器
     * @param converters
     */
   @Override
   protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        //创建消息转化器
        MappingJackson2HttpMessageConverter messageConverter=new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用jackson将java对象转换为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转化器对象追加到mvc框架的转换器集合中
        converters.add(0,messageConverter);
        super.extendMessageConverters(converters);
        log.info("消息转换器启动成功");
    }

    @Override
    protected void addCorsMappings(CorsRegistry registry) {
       //所有请求进行跨域处理
       registry.addMapping("/**")
         //允许访问
        .allowedOrigins("http://localhost:8080")
               //允许通过的请求数
        .allowedMethods("*")
               //允许的请求头
        .allowedHeaders("*");



    }
}


